01-11-2013
: evaluates in POSIX shells to the result of /usr/bin/true or true.
It is used like that to override a return status value that would affect subsequent processing.
For example, in Appworx (a batch control system) a false return code almost anywhere is detectable, so that if ||: were not there at the end of a line, appworx may see a false return and abort the job when the child process returns. Even though the job may have completed correctly.
Don't ask how, I'd have to guess.
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qmove(1B) PBS qmove(1B)
NAME
qmove - move pbs batch job
SYNOPSIS
qmove destination job_identifier ...
DESCRIPTION
To move a job is to remove the job from the queue in which it resides and instantiate the job in another queue. The qmove command issues a
Move Job batch request to the batch server that currently owns each job specified by job_identifier.
A job in the Running , Transiting , or Exiting state cannot be moved.
OPERANDS
The first operand is the new destinationfor
queue
@server
queue@server
See the PBS ERS section , "Destination Identifiers".
If the destination operand describes only a queue, then qmove will move jobs into the queue of the specified name at the job's current
server.
If the destination operand describes only a batch server, then qmove will move jobs into the default queue at that batch server.
If the destination operand describes both a queue and a batch server, then qmove will move the jobs into the specified queue at the speci-
fied server.
All following operands are job_identifiers which specify the jobs to be moved to the new destination. The qmove command accepts one or
more job_identifier operands of the form:
sequence_number[.server_name][@server]
STANDARD ERROR
The qmove command will write a diagnostic messages to standard error for each error occurrence.
EXIT STATUS
Upon successful processing of all the operands presented to the qmove command, the exit status will be a value of zero.
If the qmove command fails to process any operand, the command exits with a value greater than zero.
SEE ALSO
qsub(1B), pbs_movejob(3B)
Local qmove(1B)